My mother's tree, in contrast, does not extend past the 1800s, so far fewer ancestors are displayed.

You can also generate a descendant tree. The tree below is for Joost DeRieux, the original immigrant of my Duryea line, who was born around 1635. Not every descendant is in the family tree file that I used to create this diagram, but you can see at a glance which branches died out or which ones need further research.